111021202102 has 4 divisors (see below), whose sum is σ = 166531803156. Its totient is φ = 55510601050.

The previous prime is 111021202087. The next prime is 111021202109. The reversal of 111021202102 is 201202120111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 201202120111 = 19 ⋅10589585269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111021202109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27755300524 + ... + 27755300527.

It is an arithmetic number, because the mean of its divisors is an integer number (41632950789).

Almost surely, 2^111021202102 is an apocalyptic number.

111021202102 is a deficient number, since it is larger than the sum of its proper divisors (55510601054).

111021202102 is an equidigital number, since it uses as much as digits as its factorization.

111021202102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55510601053.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111021202102 its reverse (201202120111), we get a palindrome (312223322213).

The spelling of 111021202102 in words is "one hundred eleven billion, twenty-one million, two hundred two thousand, one hundred two".